Method for measuring peeling stability of release film and release film laminate

a technology of release film and stability, which is applied in the direction of film/foil adhesives, instruments, mechanical means, etc., can solve the problems of adhesive lifting up, and achieve excellent peeling stability among a plurality of release films, high reliability and accuracy, and the effect of ensuring efficiency

Active Publication Date: 2020-02-18
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017]In determining whether the peeling stability among a plurality of release films is excellent via the method for measuring the peeling stability of a release film, the efficiency may be secured, and a result having high reliability and accuracy may be obtained.
[0018]A laminate, which includes a release film having excellent peeling stability measured by the method for measuring the peeling stability of a release film, has physical properties suitable as a carrier for an adhesive film, and may reduce a defect rate when the adhesive film is applied to a target article.

Problems solved by technology

In this case, when a plurality of release films is used, there may occur a phenomenon in that an adhesive is lifted up or a problem in that an adhesive is transferred to the release film, depending on each difference in release strength.

Method used

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  • Method for measuring peeling stability of release film and release film laminate

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0055]A laminate including an acrylic adhesive layer and a light-peel release film and a medium-peel release film attached to both sides of the adhesive layer was prepared. The component and content of each release layer and base layer of the light-peel release film and the medium-peel release film are shown in the following Table 1. Subsequently, for the light-peel release film and the medium-peel release film, a light-peel, low-speed release strength (A) and a medium-peel, low-speed release strength (B) were measured by measuring the release strength at the peeling speed of 0.3 m / min. Subsequently, for the same laminate, a light-peel, high-speed release strength (C) and a medium-peel, high-speed release strength (D) were measured by measuring the release strength at the peeling speed of 30 m / min. Subsequently, a low-speed release strength balance and a high-speed release strength balance were measured by calculating the values of B / A and D / C. Furthermore, a light-peel speed change...

example 2

[0057]The component and content of each release layer and base layer of the light-peel release film and the medium-peel release film are shown in the following Table 2, and except for the component and content, the low-speed release strength balance, the high-speed release strength balance, the light-peel speed change rate, and the medium-peel speed change rate were measured in the same manner as in Example 1. The results are shown in the following Table 3.

[0058]

TABLE 2PolydimethylsiloxaneSiliconePt-based(PDMS)resincatalystLight-ReleaseTo 100—5peellayerreleaseBase100 μm PET filmfilmlayerMedium-ReleaseTo 100305peellayerreleaseBase100 μm PET filmfilmlayer

[0059]The low-speed release strength balance, the high-speed release strength balance, the light-peel speed change rate, and the medium-peel speed change rate, which were measured by the method for measuring the peeling stability of a release film in Examples 1 and 2, are shown in the following Table 3.

[0060]

TABLE 3Low-speedHigh-speed...

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Abstract

Provided is a method for measuring the peeling stability of a release film and a release film laminate by measuring a high-speed release strength balance and a low-speed strength balance on the basis of General Formulas 1 and 2.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT / KR2015 / 011340 filed Oct. 26, 2015, which claims priority to Korean Application No. 10-2014-0147318 filed on Oct. 28, 2014, all of which are incorporated herein by reference.TECHNICAL FIELD[0002]The present invention relates to a method for measuring the peeling stability of a release film and a release film laminate.BACKGROUND ART[0003]A release film is a film which facilitates handling and transport of a product and can be easily separated, and has been utilized for various uses. For example, the release film may be used as a carrier film for an adhesive film. In this case, when a plurality of release films is used, there may occur a phenomenon in that an adhesive is lifted up or a problem in that an adhesive is transferred to the release film, depending on each difference in release strength. Therefore, there is a need for a veri...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G01N19/04B32B5/26B32B27/00B32B27/10B32B5/02B32B43/00B32B27/36B32B27/30B32B27/08B32B37/12B32B27/12B32B29/02B32B5/24B32B29/00B32B27/32B32B7/12B32B7/06B32B27/06B32B37/26
CPCB32B5/022B32B37/12B32B27/08B32B27/32B32B7/06B32B27/00B32B27/306B32B27/36B32B43/006B32B5/26B32B37/26B32B5/24B32B27/12B32B29/002B32B29/02B32B27/06G01N19/04B32B27/10B32B29/005B32B7/12G01N2203/0091B32B2405/00B32B2307/748B32B2037/268B32B2307/306C09J7/245C09J7/241C09J7/255C09J7/401C09J7/21C09J2483/005C09J2491/005C09J2467/006C09J2467/005C09J2463/005C09J2433/00C09J2433/005C09J2423/046C09J2423/045C09J2429/005C09J2429/006C09J2401/005C09J2400/283C09J2301/122C09J2301/312G06F17/11
Inventor PARK, JUN-HYOUNGKIM, JANG-SOON
Owner LG CHEM LTD
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